A range of one handed bar clamp and spreaders for a variety of clamping applications one handed operation ergonomically designed glass reinforced nylon plastic handles with thermal plastic rubber grips for comfort clamping force 112 kg 247 ibs 1100nm heavy duty mechanism with precision engineered carbon steel bar for rigidity removeable thermal rubber pads patent nos us6655670 de203195388specifications max throat depth d80 mm 3 18 inch max opening o305 mm 12 inch spreading capacity170 mm 6 3